Ectothermic scales
external fertilization
spinal cord
amniotic eggs
lungs in adults
gills in adults
metamorphosis
fish
fish and amphibians
amphibians
fish and
reptiles
fish, reptiles
and amphibians
amphibians and
reptiles

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

The us council on environmental quality, the world wildlife fund of the united states, the ecological society of america, the smithsonian institution, and the international union for the conservation of nature have proposed four principles of wildlife conservation. which of the following does not apply to wildlife conservation? a) continuous monitoring, analysis, and assessment b) ecosystem maintenance that includes wildlife c) a plan encompassing entire communities of organisms and all renewable resources d) a continued interest in harvesting populations for sport

What characteristic makes a cell membrane selectively permeable